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Articles 18661 - 18690 of 21422
Full-Text Articles in Entire DC Network
Redescription Of Eimeria Escomeli (Rastegaieff, 1930) From Myrmecophaga Tridactyla, And A First Report From Bolivia, Scott Lyell Gardner, Steve Upton, C. R. Lambert, O. C. Jordán
Redescription Of Eimeria Escomeli (Rastegaieff, 1930) From Myrmecophaga Tridactyla, And A First Report From Bolivia, Scott Lyell Gardner, Steve Upton, C. R. Lambert, O. C. Jordán
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Eimeria escomeli (Rastegaieff, 1930) Levine and Becker, 1933, is redescribed from the giant anteater, Myrmecophaga tridactyla (L.), from the departamento de La Paz, Bolivia. This is the first report of parasites from M. tridactyla from Bolivia and only the third time that coccidians have been recorded from this host.
Factors Influencing Distribution And Abundance Of The Loggerhead Shrike (Lanius Ludovicianus Migrans) In South-Central Illinois, Eric Lantz Smith
Factors Influencing Distribution And Abundance Of The Loggerhead Shrike (Lanius Ludovicianus Migrans) In South-Central Illinois, Eric Lantz Smith
Masters Theses
The loggerhead shrike (Lanius ludovicianus) is listed as a threatened species in Illinois as a result of population declines that have occurred since approximately 1900. Although Graber et al. (1973) reported that this species had been largely extirpated from the northern two-thirds of Illinois by 1965, there has been no research on shrike distribution or abundance in the state since that time. Consequently, a roadside survey was completed in 32 south-central Illinois counties to delineate the abundance of loggerhead shrikes in the study area and attempt to relate their abundance to land-use patterns among counties surveyed.
Two hundred and eleven …
Leishmaniasis In A Domestic Goat In Kenya, A. Olufemi Williams, J. Mutinga, M. Rodgers
Leishmaniasis In A Domestic Goat In Kenya, A. Olufemi Williams, J. Mutinga, M. Rodgers
All Peer-Reviewed Publications
The pathological and electron-microscopic features of the first case of autochthonous leishmaniasis affecting a domestic goat in Kenya are described. They are similar to what have been described in man and other animals. Using a short amino-acid sequence common to all the species of leishmania as primers for kDNA synthesis, the intervening sequence of 120 bases was amplified in the goat's tissues by polymerase chain reaction (PCR). The leishmania kinetoplast DNA sequence was detected in all the different infected tissues of the goat examined. The sensitivity and specificity of this assay are discussed. The result of the assay used was …
Predation On Livestock Ticks By Chickens, S. M. Hassan, O. O. Dipeolu, A. O. Amoo, T. R. Odhiambo
Predation On Livestock Ticks By Chickens, S. M. Hassan, O. O. Dipeolu, A. O. Amoo, T. R. Odhiambo
All Peer-Reviewed Publications
Chickens were shown to be natural predators of ticks. Rhipicephalus appendiculatus were recovered in large numbers from the crops and gizzards of chickens which had scavenged for 30 min-1 h among tick-infested cattle. Other ticks recovered were Amblyomma variegatum and Boophilus decoloratus. The numbers of ticks recovered ranged from 3 to 331, with an average of 81 per chicken. Cattle facilitated the predation of ticks by certain behavioural actions. Chickens also picked up both engorged and unengorged ticks seeded on vegetation, but unengorged ticks were preferred. The possibility of tick predation by chickens forming a viable biological control component in …
An Ecological Description Of Three Black Bass Species In Two Northeastern Kentucky Muskellunge Streams, Albert F. Surmont Jr.
An Ecological Description Of Three Black Bass Species In Two Northeastern Kentucky Muskellunge Streams, Albert F. Surmont Jr.
Morehead State Theses and Dissertations
A thesis presented to the faculty of the Department of Biological and Environmental Sciences at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science by Albert F. Surmont, Jr. on December 10, 1990.
A Report On Black-Tailed Prairie Dogs In Nebraska, Their Biology, Behavior, Ecology, Management, And Responses To A Visual Barrier Fence, Nancy S. Foster
A Report On Black-Tailed Prairie Dogs In Nebraska, Their Biology, Behavior, Ecology, Management, And Responses To A Visual Barrier Fence, Nancy S. Foster
School of Natural Resources: Dissertations, Theses, and Student Research
I examined the effects of a visual barrier fence, which had a see-through visibility of 600/0, on the foraging, vigilance, and aggressive behaviors of adult female black-tailed prairie dogs from June through August 1990 in central Nebraska. I also examined changes in their home ranges and use of an area in response to this fence. Prairie dogs prefer an open view of their surroundings. Therefore, I expected animals near a visual barrier to spend more time in vigilance and aggression, and less time foraging. Adult female prairie dogs exposed to the visual barrier devoted more time to foraging and less …
Polymorphism Of Eimerian Oocysts Can Be A Problem In Naturally Infected Hosts: An Example From Subterranean Rodents In Bolivia, Scott Lyell Gardner, Donald W. Duszynski
Polymorphism Of Eimerian Oocysts Can Be A Problem In Naturally Infected Hosts: An Example From Subterranean Rodents In Bolivia, Scott Lyell Gardner, Donald W. Duszynski
Harold W. Manter Laboratory of Parasitology: Faculty Publications
Since 1986, 364 tuco-tucos (Ctenomys spp.) representing 7 species were collected from 16 major collecting areas representing at least 4 distinct ecological habitats in Bolivia, South America. All were examined for coccidia, and 125 (34%) had oocysts in their feces including 84 of 236 (36%) Ctenomys boliviensis from tropical palm/savanna habitats; 1 of 3 (33%) C. conoveri from a chaco thorn forest; 3 of 7 (33%) C. frater from medium altitude grass habitats; and 6 of 8 (75%) C. lewisi and 31 of 35 (88%) C. opimus from high altitude/puna habitats. None of 3 C. …
Lake Mead Nutrient Enhancement Project, Peter D. Vaux, Larry J. Paulson, Nevada Department Of Wildlife, National Oceanic And Atmospheric Administration
Lake Mead Nutrient Enhancement Project, Peter D. Vaux, Larry J. Paulson, Nevada Department Of Wildlife, National Oceanic And Atmospheric Administration
Publications (WR)
The Lake Mead Fertilization Project is a research program designed to investigate the potential for using large-scale artificial fertilization to enhance the game fisheries of this reservoir through an increase in the population of threadfin shad, the system's primary forage species. A substantial decline in the population of largemouth bass, together with poor condition of adult striped bass, are the two major issues affecting the Lake Mead game fisheries. Both issues have been hypothesized to be a result of an inadequate amount of forage in the reservoir. Previous studies have in turn suggested that a major factor limiting the shad …
State Of The Fisheries Report 1990, Fisheries Department Of Western Australia
State Of The Fisheries Report 1990, Fisheries Department Of Western Australia
Status Reports of the Fisheries and Aquatic Resources
The State of the Fisheries is published annually by the Fisheries Department as part of the statutory reporting process required under the Fisheries Act. This report covers developments and production in the State's fisheries up to the end of December 1990. Full details of the department's operations for this period are published separately in the department's annual reports for the financial years ending June 1990 and 1991. Figures provided in the tables are derived from catch returns completed by fishermen which are processed by the Australian Bureau of Statistics up to June 1990. Other information provided in the text comes …
Macroinvertebrate Drift Abundance Below Bonneville Dam And Its Relation To Juvenile Salmonid Food Habits, William Douglas Muir
Macroinvertebrate Drift Abundance Below Bonneville Dam And Its Relation To Juvenile Salmonid Food Habits, William Douglas Muir
Dissertations and Theses
There is a paucity of information concerning the invertebrate food resources available to juvenile salmonids in the Columbia River as they migrate seaward. Construction of mainstream dams has altered the temperature cycle, flow regime, and substrate which indigenous invertebrates were adapted to. Studies on how the macroinvertebrate community has adapted to these alterations have been neglected. This study was undertaken to help fill this void.
Macroinvertebrate drift samples were collected over a three year period in the Columbia River downstream from Bonneville Dam. Samples were collected with a D-ring plankton net fished on the bottom for one-half hour. Two sites …
Kentucky Warbler (Vol. 66, No. 4), Kentucky Library Research Collections
Kentucky Warbler (Vol. 66, No. 4), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
Wpa News 30 (1990), World Pheasant Association
Wpa News 30 (1990), World Pheasant Association
Galliformes Specialist Group and Affiliated Societies: Newsletters
WPA News (November 1990), number 30
Published by the World Pheasant Association
Alternative Methods Of Selection For Litter Size In Mice: I. Characterization Of Base Population And Development Of Methods, A. C. Clutter, Merlyn K. Nielsen, R. K. Johnson
Alternative Methods Of Selection For Litter Size In Mice: I. Characterization Of Base Population And Development Of Methods, A. C. Clutter, Merlyn K. Nielsen, R. K. Johnson
Department of Animal Science: Faculty Publications
Studies on a base population of mice were used to establish an index of components of litter size and a physiological model for measuring uterine capacity to be used subsequently in a selection experiment evaluating alternative methods for practicing selection to increase litter size. Heritability estimates of litter size, ovulation rate and ova success (fraction of ova resulting in fully formed pups) were .18, .33 and .15, respectively. No significant genetic or phenotypic correlation was found between overall ovulation rate and ova success. Phenotypic means and genetic variances were higher for characteristics measured on the right than on the left …
Department Of Fisheries Annual Report 1990, Department Of Fisheries, Western Australia
Department Of Fisheries Annual Report 1990, Department Of Fisheries, Western Australia
Department of Fisheries Annual Reports
In accordance with Section 62 of the Financial Administration and Audit Act 1985, I submit for your information and presentation to Parliament the Annual Report of the Fisheries Department for the financial year ending 30 June 1990.
The Annual Report has been prepared in accordance with the provisions of the Financial Administration and Audit Act 1985.
Section 57 of the Fisheries Act 1905 requires me to report to you as to the state of the fisheries of the State and for such report to be laid before both Houses of Parliament.
Pheasants In Asia 1989, David A. Hill, Peter J. Garson, David Jenkins
Pheasants In Asia 1989, David A. Hill, Peter J. Garson, David Jenkins
Galliformes Specialist Group and Affiliated Societies: Conference Proceedings
Section 1: Studies of Pheasants in China
Distribution and Status
An overview of research on pheasants in China, 1978-88, Cheng Tso-Hsin
Pheasant conservation in Asia:Ssome introductory remarks, Keith Howman and Lew Young
The distribution of pheasants and partridges in China, Tang Chan-Zhu
The ecological and geographical distribution of pheasants in Wolong Nature Reserve, Deng Wei Jie
The gamebirds of Boaxing, Sichuan, China, He Fen-Qi and Cui Xie-Zhen
Galliformes of Yunnan Province in China, Yang Lan
Pheasant and partridge species of the Nu River Autonomous Region, Northwestern Yunnan, China, He Fen-Qi, Gao Ying-Xing and Zheng Yang-Zhi
Pheasants on the Qinghai-Xizang Plateau, …
The Effects Of Two Polycyclic Aromatic Hydrocarbons Benzo[A]Pyrene And Naphthalene On Reproductive Success Embryological Development Larval Physiology And Mortality Of The Mud Crab Rhithropanopeus Harisii (Gould), Gregory V. White
OES Theses and Dissertations
Polycyclic aromatic hydrocarbons (PAHs) such as naphthalene (Nap) and benzo[a]pyrene (B[a]P) are common in the water column and sediments of estuarine and coastal areas. The mud crab Rhithropanopeus harrisii was exposed to varying concentrations of Nap or B[a]P to determine the effects on reproductive success, embryological development, larval physiology and mortality. Nap and B[a]P decreased hatching success and prolonged embryological development. Both pollutants produced high abnormality frequencies for egg exposed larvae. Molt frequency and respiratory rates of larvae from non-exposed eggs were more chronically affected by these pollutants than were egg exposed larvae. The EC50 concentrations were determined for …
Tests Of Three Hypotheses Of Hatching Asynchrony In The Common Tern, Patricia Bollinger, Eric Bollinger, Richard Malecki
Tests Of Three Hypotheses Of Hatching Asynchrony In The Common Tern, Patricia Bollinger, Eric Bollinger, Richard Malecki
Faculty Research & Creative Activity
We examined three hypotheses concerning hatching asynchrony in the Common Tern (Sterna hirundo). Survival of third-hatching "C-chicks" was significantly lower than that of "A-" and "B-chicks" in broods of three. In 2 yr when conditions did not appear favorable, survival was significantly higher in manipulated broods in which chicks hatched synchronously (73%) than in nonmanipulated broods (56%). Chicks in synchronous broods grew significantly faster than C-chicks and at a rate similar to A- and B-chicks. These results were inconsistent with the brood-reduction hypothesis, which predicts that hatching asynchrony will maximize brood success under conditions of food limitation. Chicks hatching from …
Tests Of Three Hypotheses Of Hatching Asynchrony In The Common Tern, Patricia B. Bollinger, Eric K. Bollinger, Richard A. Malecki
Tests Of Three Hypotheses Of Hatching Asynchrony In The Common Tern, Patricia B. Bollinger, Eric K. Bollinger, Richard A. Malecki
Faculty Research & Creative Activity
We examined three hypotheses concerning hatching asynchrony in the Common Tern (Sterna hirundo). Survival of third-hatching "C-chicks" was significantly lower than that of "A-" and "B-chicks" in broods of three. In 2 yr when conditions did not appear favorable, survival was significantly higher in manipulated broods in which chicks hatched synchronously (73%) than in nonmanipulated broods (56%). Chicks in synchronous broods grew significantly faster than C-chicks and at a rate similar to A- and B-chicks. These results were inconsistent with the brood-reduction hypothesis, which predicts that hatching asynchrony will maximize brood success under conditions of food limitation. Chicks hatching from …
Freshwater Aquaculture In Western Australia., Fisheries Department Of Western Australia
Freshwater Aquaculture In Western Australia., Fisheries Department Of Western Australia
Fisheries Management Papers
Freshwater aquaculture in Western Australia is a relatively new industry. The first serious attempts began in 1975 after the Government relaxed the regulations on marron to allow for its farming and sale (at the legal minimum size of 17 mm carapace length). Since 1975, marron have been the focus of most attempts at aquaculture although in recent years trout, yabbies, freshwater aquarium fish and a number of other fish species have received greater attention. In 1984 the Minister for Fisheries established the Fish Farming Legislative Review Committee to review and make recommendations on the fish farming provisions of the Fisheries …
Future Policy For Charter Fishing Operations In Western Australia., P. Millington
Future Policy For Charter Fishing Operations In Western Australia., P. Millington
Fisheries Management Papers
About 40 boats in Western Australia gain some of their income from taking recreational fishing parties out on charter. Half of these charter boats are also licensed commercial fishing boats. There are few Fisheries Department controls over charter boat fishing at present. However, with increasing tourism and leisure time, there are sound reasons for the Minister for fisheries to tighten up the controls over charter boat fishing to prevent over-exploitation in some areas or on particular stocks.
First Nebraska Kittiwake Specimen, Paul A. Johnsgard
First Nebraska Kittiwake Specimen, Paul A. Johnsgard
Nebraska Bird Review
FIRST NEBRASKA KITTIWAKE SPECIMEN
The Black-legged Kittiwake (Rissa tridactyla) has previously been known from Nebraska only from a few sight records. Dr. George Hudson observed one at Oak Creek Park, Lincoln, in March, 1939 (NBR 5:57). Another individual was seen at Branched Oak Lake, Lancaster County, during April of 1976. Thirdly, an immature was seen and photographed at Oak LakePark, Lincoln, on April 20-21, 1981 (NBR 49:41). Lastly, during the fall occurrence report for 1988 (NBR 57: 16, 53) Kittiwakes were reported from Cedar and Douglas-northern Sarpy counties, the Cedar County sightings involving up to …
Nou Participation In Academy Of Science Meeting
Nou Participation In Academy Of Science Meeting
Nebraska Bird Review
NOU PARTICIPATION IN ACADEMY OF SCIENCE MEETING
In 1990, NOU resumed active participation in the Annual Meeting of the Nebraska Academy of Sciences. Mr. Thomas E. Labedz, President of NOU, was chairman of the session, which was held in the afternoon of 20 April. The following papers were presented:
SOLlTARY VS. GREGARIOUS NESTING IN BURROWING OWLS. Martha Desmond and Julie Savidge, Department of Forestry, Fisheries, and Wildlife, IANR, University of Nebraska - Lincoln, Lincoln, Nebraska 68583-0819.
In the Great Plains region, Burrowing Owls (Athene cunicularia) will nest as isolated pairs in abandoned badger burrows, but are most commonly …
Survey For Least Terns And Other Birds On The North And South Platte Rivers, Eastern Keith County
Survey For Least Terns And Other Birds On The North And South Platte Rivers, Eastern Keith County
Nebraska Bird Review
SURVEY FOR LEAST TERNS ANO OTHER BIROS ON THE NORTH ANO SOUTH PLATTE RIVERS, EASTERN KEITH COUNTY
The Interior Least Tern (Sterna antillarum athalassos) is considered a nationally endangered subspecies, and except for a sighting of this form on Lake McConaughy during the summer of 1977 by Fretwell (Rosche and Johnsgard, 1984) and a more recent sighting of a pair with an unfledged chick between Arthur and Martin bays of Lake McConaughy in 1989 (Czaplewski, 1989), there have been no other published records of this species in Keith County.
Because of a chance sighting on 20 May 1990, …
Biogeography And Species Density Distributions Of Tasmanian Mammals, Jerry E. Bevers
Biogeography And Species Density Distributions Of Tasmanian Mammals, Jerry E. Bevers
Dissertations and Theses
Separated from mainland Australia by the Bass Strait, Tasmania has acted as an island preserve maintaining large populations of many mammalian species presently uncommon, rare, or extinct on mainland Australia.
There are few studies of Tasmanian mammal distributions. Recent distributional maps, based on information from surveys and mammal specimens, allowed for an investigation of the species density distributions of the terrestrial mammals of Tasmania. Compilation of species' distributional information into species density distributions provides an overview as to which areas may provide the most significant habitat for the greatest number of species; what geographic variations may influence species distributions; and …
Kentucky Warbler (Vol. 66, No. 3), Kentucky Library Research Collections
Kentucky Warbler (Vol. 66, No. 3), Kentucky Library Research Collections
The Kentucky Warbler
No abstract provided.
The Mayfly Newsletter, Peter M. Grant
The Mayfly Newsletter, Peter M. Grant
The Mayfly Newsletter
The Mayfly Newsletter is the official newsletter of the Permanent Committee of the International Conferences on Ephemeroptera.
Dna Recombination And Natural Selection Pressure Sustain Genetic Sequence Diversity Of The Feline Mhc Class I Genes, Naoya Yuhki, Stephen J. O'Brien
Dna Recombination And Natural Selection Pressure Sustain Genetic Sequence Diversity Of The Feline Mhc Class I Genes, Naoya Yuhki, Stephen J. O'Brien
Biology Faculty Articles
Sequence comparisons of seven distinct MHC class I cDNA clones revealed that feline class I molecules have a remarkable similarity to human HLA genes in their organization of functional domains as well as in the nonrandom partitioning of genetic variability according to the functional constraints ascribed to different regions of the MHC molecule. The distribution of the pattern of sequence polymorphism in the cat as compared with genetic diversity of human and mouse class I genes provides evidence for four coordinate factors that contribute to the origin and sustenance of abundant allele diversity that characterizes the MHC in the species. …
A Chronic Toxicity Assessment Of An Industrial Effluent Utilizing Pimephales Promelas And Ceriodaphnia Sp, Sharon J. Whitaker Fugate
A Chronic Toxicity Assessment Of An Industrial Effluent Utilizing Pimephales Promelas And Ceriodaphnia Sp, Sharon J. Whitaker Fugate
Morehead State Theses and Dissertations
A thesis presented to the faculty of the College of Arts and Sciences at Morehead State University in partial fulfillment of the requirements for the Degree of Master of Science in Biology by Sharon J. Whitaker Fugate on July 23, 1990.
Small Mammals In The Great Dismal Swamp Of Virginia And North Carolina, Robert K. Rose, Roger K. Everton, Jean F. Stankavich
Small Mammals In The Great Dismal Swamp Of Virginia And North Carolina, Robert K. Rose, Roger K. Everton, Jean F. Stankavich
Biological Sciences Faculty Publications
Small" mammals were surveyed in a range of habitats in the Great Dismal Swamp of Virginia and North Carolina. The survey is based on three chronologically overlapping studies, each lasting 15-18 months and for which the results have been reported separately. A different trapping method was used in each of the three studies: nest boxes, Fitch live traps, or pitfall traps. Only two species of mammals, both arboreal, were taken in nest boxes, compared with 10 and 9 species in Fitch live traps and pitfall traps, respectively. The Fitch live traps had a much higher catch rate per 1,000 trap-nights …
Reproduction In The Hispid Cotton Rat, Sigmodon-Hispidus Say And Ord (Rodentia: Muridae), In Southeastern Virginia, Robert K. Rose, Michael H. Mitchell
Reproduction In The Hispid Cotton Rat, Sigmodon-Hispidus Say And Ord (Rodentia: Muridae), In Southeastern Virginia, Robert K. Rose, Michael H. Mitchell
Biological Sciences Faculty Publications
The hispid cotton rat, Sigmodon hispidus Say and Ord, a species of the southwestern United States that has been moving northward and eastward in this century, was first observed in Virginia in 1940. In this study of the cotton rat in southeastern Virginia, most males were reproductively competent from February through November, embryos were recorded from March through October, and litter sizes were comparable to those from other locations except Kansas. Also unlike the cotton rat in Kansas, animals grew at substantial rates during the winter in Virginia. The hispid cotton rat seems to have adjusted its breeding season in …